isascii & isextendedascii implementation

Applications Programming
1

I know that there exists a function that says whether a particular character is ascii or not (i.e, isascii), is there any similar function that can say whether a character is an extended ascii. If possible can i have the internal implementaation of both.

Thanks in advance.

2

The google search for isextendedascii turned up only three links. All of them seem to be for java... check it out

3

Define 'extended ascii'. Do you mean multibyte characters in UTF8 or something like that?

The definition of isascii is simple:

// Valid ASCII characters are 0-127
int isascii(int char)
{
  return((char <= 127) && (char >= 0));
}